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Case Reports
. 2024 Mar 26;16(3):e56931.
doi: 10.7759/cureus.56931. eCollection 2024 Mar.

Myositis Ossificans Traumatica of Bilateral Sternocleidomastoid Muscles After Chiropractor Adjustment: A Case Report

Martin Felix  1 , Ryan Denis  1 , Charles Chen  2 , Ana Picaza  2 , Damian Casadesus  2
Affiliations
Case Reports

Myositis Ossificans Traumatica of Bilateral Sternocleidomastoid Muscles After Chiropractor Adjustment: A Case Report

Martin Felix et al. Cureus. .

Abstract

A woman in her 20s with a past medical history of surgical debulking of a right neck mass presented to the hospital for persistent and worsening right shoulder pain. The shoulder pain was associated with trismus and back and neck pain. A CT scan of the neck with contrast revealed post-surgical changes with increased heterotopic ossification throughout the surgical site extending to the supraclavicular soft tissues and the left sternocleidomastoid muscle, suggesting muscle ossification. A biopsy was performed, and the patient was diagnosed with myositis ossificans (MO). Initial treatment began with the administration of steroids and analgesics. She was scheduled for a follow-up with orthopedics, rheumatology, and genetics, but she was lost for follow-up. MO is a very rare medical condition usually associated with trauma, and in our patient, the symptoms started after a chiropractic adjustment.

Keywords: ectopic ossification; heterotopic bone; myositis ossificans traumatica; myositis ossification; soft tissue masses.

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Conflict of interest statement

The authors have declared that no competing interests exist.

Figures

Figure 1
Figure 1. CT scan of the neck with heterotropic bone formation in bilateral sternocleidomastoid muscle
Figure 2
Figure 2. Heterotropic bone formation in the muscle biopsy
See this image and copyright information in PMC

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